Midi Functions - Yamaha Clavinova CLP-152S Owner's Manual

MIDI Functions

This information tells the receiving keyboard or tone generator to play a certain note (specified by the MIDI
note number) at a certain dynamic level (specified by the MIDI velocity value). Note and velocity data is trans-
mitted by the Clavinova whenever a key is pressed, and the Clavinova's internal AWM tone generator will
"play" the corresponding note(s) whenever note and velocity data is received from an external MIDI device.
The CLP-152S/153S transmits a MIDI program change number between 0 and 4 when one of its voice selec-
tors is pressed. This normally causes the correspondingly numbered voice to be selected on a receiving MIDI
device. The Clavinova will respond in the same way, automatically selecting the appropriate voice when a MIDI
program change number is received. See "Program Change ON/OFF" on page 14 for information on turning
program change number reception and transmission ON or OFF.
Control Change data representing Soft, Sostenuto and Damper pedal operations is transmitted by the
Clavinova whenever one of these pedals is used. If the receiving device is a tone generator or another keyboard,
it will respond in the same way as the Clavinova's internal tone generator when one of the pedals is used. The
Clavinova also receives and responds to the appropriate control change data. See "Control Change ON/OFF" on
page 15 for information on turning control change number reception and transmission ON or OFF.
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MIDI, the Musical Instrument Digital Interface, is a world-standard com-
munication interface that allows MIDI-compatible musical instruments and
equipment to share musical information and control one another. This
makes it possible to create "systems" of MIDI instruments and equipment
that offer far greater versatility and control than is available with isolated
instruments. For example, most MIDI keyboards (including the Clavinova,
of course) transmit note and velocity (touch response) information via the
MIDI OUT connector whenever a note is played on the keyboard. If the
MIDI OUT connector is connected to the MIDI IN connector of a second
keyboard (synthesizer, etc.) or a tone generator (essentially a synthesizer
with no keyboard), the second keyboard or tone generator will respond
precisely to notes played on the original transmitting keyboard. The result is
that you can effectively play two instruments at once, providing thick multi-
instrument sounds.
This same type of musical information transfer is used for MIDI se-
quence recording. A sequence recorder can be used to "record" MIDI data
received from a Clavinova, for example. When the recorded data is played
back, the Clavinova automatically "plays" the recorded performance in
precise detail.
The examples given above really only scratch the surface. MIDI can do
much, much more. The CLP-152S/153S offers a number of MIDI functions
that allows it to be used in fairly sophisticated MIDI systems.
The MIDI information (messages) transmitted and received by the
Clavinova are as follows: